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Message-Id: <e3f25e6e5836c4790fbe395ff42e241f372d859d.1349761836.git.len.brown@intel.com> Date: Tue, 9 Oct 2012 01:53:51 -0400 From: Len Brown <lenb@...nel.org> To: linux-acpi@...r.kernel.org, linux-pm@...r.kernel.org Cc: linux-kernel@...r.kernel.org, Zhang Rui <rui.zhang@...el.com> Subject: [PATCH 01/30] Thermal: Introduce multiple cooling states support From: Zhang Rui <rui.zhang@...el.com> This is because general active cooling devices, like fans, may have multiple speeds, which can be mapped to different cooling states. Signed-off-by: Zhang Rui <rui.zhang@...el.com> Reviewed-by: Rafael J. Wysocki <rjw@...k.pl> Reviewed-by: Valentin, Eduardo <eduardo.valentin@...com> --- drivers/thermal/thermal_sys.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c index 2ab31e4..dc4044b 100644 --- a/drivers/thermal/thermal_sys.c +++ b/drivers/thermal/thermal_sys.c @@ -1059,6 +1059,7 @@ void thermal_zone_device_update(struct thermal_zone_device *tz) enum thermal_trip_type trip_type; struct thermal_cooling_device_instance *instance; struct thermal_cooling_device *cdev; + unsigned long cur_state, max_state; mutex_lock(&tz->lock); @@ -1098,10 +1099,17 @@ void thermal_zone_device_update(struct thermal_zone_device *tz) cdev = instance->cdev; + cdev->ops->get_cur_state(cdev, &cur_state); + cdev->ops->get_max_state(cdev, &max_state); + if (temp >= trip_temp) - cdev->ops->set_cur_state(cdev, 1); + cur_state = cur_state < max_state ? + (cur_state + 1) : max_state; else - cdev->ops->set_cur_state(cdev, 0); + cur_state = cur_state > 0 ? + (cur_state - 1) : 0; + + cdev->ops->set_cur_state(cdev, cur_state); } break; case THERMAL_TRIP_PASSIVE: -- 1.8.0.rc1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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